The Buzz khaki trousers are better than good, they're a virtual clone of WWII issue khaki trousers. However, if you're in the 32 - 36 waist size it's still possible to get wartime khaki trousers on ebay for not alot of money (I just bought a pair of un-issued 1944 khakis (sz. 36 x 34) for $50). Goodm luck whichever way you go.
Grant
Grant